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Finding the Fourth Proportional to 7,427.40, 11,113.41 and 7,344.36

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Solution

The fourth proportional to 7,427.40, 11,113.41 and 7,344.36 is: 10,989.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,427.40 : 11,113.41 = 7,344.36 : x
  2. Step 2: Convert to fraction form
    7,427.40/11,113.41 = 7,344.36/x
  3. Step 3: Cross multiply
    7,427.40x = 11,113.41 × 7,344.36
  4. Step 4: Simplify right side
    7,427.40x = 81,620,883.87
  5. Step 5: Solve for x
    x = 81,620,883.87/7,427.40
  6. Step 6: Final answer
    x = 10,989.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.